Solar cells with 100% efficiency October 22, 2008
Posted by teknow in alternative Energy.Tags: alternative Energy, Solar Cells
add a comment
Researchers at Ohio State University have accidentally discovered a new solar cell material capable of absorbing all of the sun’s visible light energy. The material is comprised of a hybrid of plastics, molybdenum and titanium. The team discovered it not only fluoresces (as most solar cells do), but also phosphoresces. Electrons in a phosphorescent state remain at a place where they can be “siphoned off” as electricity over 7 million times longer than those generated in a fluorescent state. This combination of materials also utilizes the entire visible spectrum of light energy, translating into a theoretical potential of almost 100% efficiency. Commercial products are still years away, but this foundational work may well pave the way for a truly renewable form of clean, global energy.
source: http://www.tgdaily.com/html_tmp/content-view-39807-113.html
Toshiba to launch SciB batteries in March 2008 December 11, 2007
Posted by teknow in Batteries, Electricity.add a comment
Up to 90% charge in 5 minutes and lasting for over 10 years are the specs enough to overhaul the existing battery market.
Toshiba promises that kind of possibilities with the launch of their new batteries in March 2008. Some of the features of this revolutionary product are as follows :
| 1. High safety | |
| SCiB is difficult to cause the internal short circuit and the thermal runaway with the new cathode material and the adoption etc. of the electrolyte of the high flash point whose thermal safety is high, it is the electric battery whose possibility of explosion and ignition quite is low. | |
| 2. Long-lived efficiency | |
| After approximately 3000 charging and cycles due to quick charge condition, capacity decrease is under only 10%. Approximately, repetition charging and which exceeds 5000 times being possible, 10 years or more it can use over again with the charge of 1 day 1 time. | |
| 3. Boosting charge efficiency | |
| It can guarantee high safety and because heavy-current charge (50A) is possible, the SCiB cell, both standard module, it can complete the charge of 90% or more of battery capacity in 5 minutes. | |
| 4. Takaide power efficiency | |
| We have the input/output efficiency where like the electric double layer capacitor is high, it is optimum to the use whose big power is necessary. | |
| 5. Low temperature efficiency | |
| Minus 30 ℃ and sufficient discharge is possible with low temperature environment, it is suitable in the use where use at cold area is anticipated. | |
Energy efficient LED lightings for home November 20, 2007
Posted by teknow in Uncategorized.Tags: electrical fixtures, LED lighting
1 comment so far
Energy efficient, environ friendly, ready to fit in existing electrical fixtures can be description of the new lighting systems from ReLED which is going to replace fluorescent tubes for good.
From Gizmag
ReLED Systems has introduced a solid state replacement for fluorescent tubes which allows existing light fixtures to be simply converted to Light Emitting Diodes (LEDs), offering lower energy consumption, longer lamp life and environmental advantages over fluorescent tubes.
The Re-LT5 LED Component System fluorescent replacement consists of high brightness diodes packaged in standard fluorescent lamp formats and coupled with a low profile driver. The durable, aluminum lamp conforms to the dimensions of a linear T5 lamp and installs into fluorescent G5 base lamp holders just as easily. The user simply changes the light bulb or tube as normal and the fluorescent light is replaced by LED. The straight-forward design of the components is aimed at simplifying the utilization of LED technology into retrofit and new construction applications.
In addition to energy savings, the benefits of LED lighting technology include a 10 year service life (more than half a billion tubes disposed of each year in the U.S. alone), no UV emissions, high quality light, and cold temperature operation.”
